Problem Symptoms Table
HINT:
When a malfunction is not confirmed by a DTC (Diagnostic Trouble Code) check and the cause of problem cannot be identified through a basic inspection, troubleshoot according to the priority order indicated in the table below.
SFI SYSTEM:
SFI SYSTEM
| Symptom | Suspected Area | Information |
|---|---|---|
| Engine does not crank (does not start) | Immobilizer system (w/ Smart Key System) | HOW TO PROCEED WITH TROUBLESHOOTING |
| Immobilizer system (w/o Smart Key System) | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Starter | INSPECTION | |
| STARTER relay | ON-VEHICLE INSPECTION | |
| Cranking holding function circuit (w/Smart Key System) | CRANKING HOLDING FUNCTION CIRCUIT | |
| Starter signal circuit (w/o Smart Key System) | STARTER SIGNAL CIRCUIT | |
| No initial combustion (does not start) | ECM power source circuit | ECM POWER SOURCE CIRCUIT |
| Ignition system | ON-VEHICLE INSPECTION | |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Fuel injector | INSPECTION | |
| VC output circuit | VC OUTPUT CIRCUIT | |
| ECM | - | |
| Difficult to start (engine cranks normally) | Electronic throttle control system | DTC P2102, P2103: THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Ignition system | ON-VEHICLE INSPECTION | |
| Spark plug | ON-VEHICLE INSPECTION | |
| Compression | ON-VEHICLE INSPECTION | |
| Fuel injector | INSPECTION | |
| VC output circuit | VC OUTPUT CIRCUIT | |
| Difficult to start with cold engine | Electronic throttle control system | DTC P2102, P2103: THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Spark plug | ON-VEHICLE INSPECTION | |
| Ignition system | ON-VEHICLE INSPECTION | |
| Fuel injector | INSPECTION | |
| Engine coolant temperature sensor | INSPECTION | |
| Difficult to start with hot engine | Electronic throttle control system | DTC P2102, P2103: THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Spark plug | ON-VEHICLE INSPECTION | |
| Ignition system | ON-VEHICLE INSPECTION | |
| Fuel injector | INSPECTION | |
| Engine coolant temperature sensor | INSPECTION | |
| High engine idle speed (poor idling) | Electronic throttle control system | DTC P2102, P2103: THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH |
| ECM power source circuit | ECM POWER SOURCE CIRCUIT | |
| A/C signal circuit (Compressor circuit) | - | |
| Acoustic control induction system | ACIS CONTROL CIRCUIT | |
| PCV hose | ON-VEHICLE INSPECTION | |
| ECM | - | |
| Low engine idle speed (poor idling) | Electronic throttle control system | DTC P2102, P2103: THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH |
| ECM power source circuit | ECM POWER SOURCE CIRCUIT | |
| A/C signal circuit (Compressor circuit) | - | |
| Acoustic control induction system | ACIS CONTROL CIRCUIT | |
| PCV hose | ON-VEHICLE INSPECTION | |
| Fuel injector | INSPECTION | |
| ECM | - | |
| Rough idling (poor idling) | Electronic throttle control system | DTC P2102, P2103: THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH |
| Fuel injector | INSPECTION | |
| Ignition system | ON-VEHICLE INSPECTION | |
| Compression | ON-VEHICLE INSPECTION | |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Spark plug | ON-VEHICLE INSPECTION | |
| Acoustic control induction system | ACIS CONTROL CIRCUIT | |
| PCV hose | ON-VEHICLE INSPECTION | |
| Hunting (poor idling) | Electronic throttle control system | DTC P2102, P2103: THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH |
| ECM power source circuit | ECM POWER SOURCE CIRCUIT | |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Spark plug | ON-VEHICLE INSPECTION | |
| Ignition system | ON-VEHICLE INSPECTION | |
| Fuel injector | INSPECTION | |
| Acoustic control induction system | ACIS CONTROL CIRCUIT | |
| PCV hose | ON-VEHICLE INSPECTION | |
| Hesitation/Poor acceleration (poor driveability) | Fuel injector | INSPECTION |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Ignition system | ON-VEHICLE INSPECTION | |
| Spark plug | ON-VEHICLE INSPECTION | |
| Air intake control system | ACIS CONTROL CIRCUIT | |
| ATT faulty (U151E) | HOW TO PROCEED WITH TROUBLESHOOTING | |
| ATT faulty (U151F) | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Surging (poor driveability) | Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT |
| Spark plug | |G-6 | |
| Ignition system | ON-VEHICLE INSPECTION | |
| Fuel injector | INSPECTION | |
| Engine stalls soon after starting | Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT |
| Electronic throttle control system | DTC P2102, P2103: THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW; THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH | |
| Crankshaft position sensor | INSPECTION | |
| Spark plug | ON-VEHICLE INSPECTION | |
| Ignition system | ON-VEHICLE INSPECTION | |
| Fuel injector | INSPECTION | |
| Engine stalls during A/C operation | A/C signal circuit (Compressor circuit) | - |
| ECM | - | |
| Unable/difficult to refuel | Refueling valve (canister) | - |
| Engine vibrates frequently when idling (Active Control) | Active control engine mount circuit | ACTIVE CONTROL ENGINE MOUNT SYSTEM |